ASTROSAT CZTI

Data Quality Report

Orbit 26173

Creation date: 2024-06-27T19:25:39.880108
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_138T04_9000003776_26173cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26173cztM0_level2_quad_clean.evt
Size (bytes)434,545,92085,397,760
Size414.4 MB 81.4 MB
Events in quadrant A2,947,480545,230
Events in quadrant B3,002,187561,010
Events in quadrant C3,249,503530,220
Events in quadrant D3,545,821523,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124850
B0126190
C0133220
D0143440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6108430.703995%
B6108510.834971%
C61081221.997380%
D61081442.357564%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7033 6110 0 0 0.00% 0.00%
B 7033 6109 0 0 0.00% 0.00%
C 7033 6109 20 20 0.28% 0.33%
D 7033 6110 118 118 1.68% 1.93%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 8780 52.52 763 748 152.9
A 3 137 6771 39.38 763 748 152.9
A 0 226 6557 37.98 763 748 152.9
B 0 230 39226 265.2 753 731 145.2
B 12 111 17506 115.57 753 731 145.2
B 11 111 15770 103.61 753 731 145.2
C 2 16 207336 1204.36 732 738 171.5
C 14 238 117184 678.82 732 738 171.5
C 3 233 73177 422.28 732 738 171.5
D 1 52 582809 3281.9 743 725 177.4
D 12 233 102975 576.5 743 725 177.4
D 2 234 25680 140.7 743 725 177.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter